Nandakumar M <m.nanda92@xxxxxxxxx> writes: >> It could be that somebody disabled the triggers, but that would have to >> be a superuser. And I hope that people randomly disabling system triggers >> on tables don't have superuser access to your database. > It is unlikely that this happened. So I am assuming corruption. > But I am able to query both the referred and referring table > successfully without any 'missing chunk' or similar errors that > usually indicate corruption. > Is it possible that corruption might cause data loss like this without > any errors? The most likely "corruption" explanation is something wrong with the indexes on the referenced and/or referencing column, causing rows to not be found when referential actions should have found them. Random querying of the tables wouldn't necessarily expose that --- you'd need to be sure that your queries use the questionable indexes, and maybe even search for some of the specific rows that seem mis-indexed. regards, tom lane
